Part of hair brush



FIG. 1 is a front elevation view of a part of hair brush in accordancewith our ornamental design;

FIG. 2 is a rear elevation view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a rear perspective view thereof;

FIG. 6 is a right side elevation view thereof;

FIG. 7 is a front perspective view thereof; and,

FIG. 8 is a left side elevation view thereof.

CLAIM The ornamental design for a part of hair brush, as shown anddescribed.